[glade/glade-3-8] GladeWidget: fix support-warning propety name

[Juan Pablo Ugarte <jpu src gnome org>]

commit a6028a76e0c95c24fb79e9d90e2b31aaaa2302a5
Author: Juan Pablo Ugarte <juanpablougarte gmail com>
Date:   Wed Sep 23 12:04:11 2020 -0300

    GladeWidget: fix support-warning propety name
    
    Properties cant have spaces in the name.

 gladeui/glade-widget.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gladeui/glade-widget.c b/gladeui/glade-widget.c
index f7ee5866..915ed22e 100644
--- a/gladeui/glade-widget.c
+++ b/gladeui/glade-widget.c
@@ -1192,7 +1192,7 @@ glade_widget_class_init (GladeWidgetClass *klass)
 
        g_object_class_install_property
                (object_class,  PROP_SUPPORT_WARNING,
-                g_param_spec_string ("support warning", _("Support Warning"),
+                g_param_spec_string ("support-warning", _("Support Warning"),
                                      _("A warning string about version mismatches"),
                                      NULL, G_PARAM_READABLE));